PREPARATION METHOD OF HOMOPOLYMERIZED N-VINYL BUTYL LACTAM IODINE WITH EFFECTIVE IODIDE CONTENT OF 20

摘要

A preparation method of homopolymerized N-vinyl butyl lactam iodine with an effective iodide content of 20%, comprises: using an N-vinyl butyl lactam iodine homopolymer and iodine with the particle size being small than 850 μm as raw materials, the mass ratio of the N-vinyl butyl lactam iodine homopolymer to the iodine with the particle size being small than 850 μm being 7:3-5:5; meanwhile, with the amount of the raw materials being the reference, adding an additive of 0.01%-5% by weight; stirring at the temperature of 50-100°C for reaction for 5-20 hours in a segmented preparation manner. The additive may be sodium citrate, sodium chloride, or sodium acetate.